Phylogeny of Trigonotis in China-with a special reference to its nutlet morphology and plastid genome.

ABSTRACT: The genus Trigonotis comprises nearly 60 species mainly distributed in East and Southeast Asia. China has the largest number of Trigonotis species in the world, with a total of 44 species, of which 38 are endemic. Nutlet morphology is useful for the taxonomic delimitation of Trigonotis. However, there are still controversial circumscriptions of nutlet shape in some species. In previous studies, interspecies phylogenetic relationships were inferred using few DNA markers and very few taxa, which possibly led to erroneous or incomplete conclusions. In this study, the nutlet morphology of 39 Trigonotis taxa and the characteristics of 34 complete chloroplast genomes (29 taxa) were investigated and analyzed. Then, the phylogenetic relationships were discussed within t

SUBMITTER: Xu XM 

PROVIDER: S-EPMC10435912 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature